Fig. 3

CT images of cochlear implants before and after using SEMAR. The image is greatly affected by electrode artifacts before using SEMAR, as part of the cochlea is obscured by the artifacts, and the electrode condition is displayed unsatisfactorily (a, c, e). The electrode artifacts in the image are reduced after using SEMAR, which allows clear observation of the corresponding structure and specific conditions of electrodes (b, d, f). The arrows in the figure indicate electrodes